<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- 适配手机端 -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>


<!-- react核心库 -->
<script src="../React-js/react.development.js"></script>
<!-- 操作DOM支持库 -->
<script src="../React-js/react-dom.development.js"></script>
<!-- babel转换库  jsx-js -->
<script src="../React-js/babel.min.js"></script>


<body>
    <div id="test"></div>
    <script type="text/babel">
        //1.创建组件
        class Weather extends React.Component {
            //初始化状态
            state = { isHot: false, wind: '微风' }

            render() {
                const { isHot, wind } = this.state
                return <h1 onClick={this.changeWeather}>今天天气很{isHot ? '炎热' : '凉爽'}，{wind}</h1>
            }

            //自定义方法————要用赋值语句的形式+箭头函数
            changeWeather = ()=> {
                console.log("this",this);
                const isHot = this.state.isHot
                this.setState({ isHot: !isHot })
            }
            // //自定义方法————要用赋值语句的形式+箭头函数
            // changeWeather = () => {
            //     const isHot = this.state.isHot
            //     this.setState({ isHot: !isHot })
            // }
        }
        //2.渲染组件到页面
        ReactDOM.render(<Weather />, document.getElementById('test'))

    </script>
</body>

</html>